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Finding the Fourth Proportional to 21,648.70, 32,470.08 and 8,510.28

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Solution

The fourth proportional to 21,648.70, 32,470.08 and 8,510.28 is: 12,764.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,648.70 : 32,470.08 = 8,510.28 : x
  2. Step 2: Convert to fraction form
    21,648.70/32,470.08 = 8,510.28/x
  3. Step 3: Cross multiply
    21,648.70x = 32,470.08 × 8,510.28
  4. Step 4: Simplify right side
    21,648.70x = 276,329,472.42
  5. Step 5: Solve for x
    x = 276,329,472.42/21,648.70
  6. Step 6: Final answer
    x = 12,764.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.